Trichoon] XXVIII. GRAMINES, 219 
Marshes on Calemba Island; one specimen in flower. March 1857. 
No. 7397. 
BENGUELLA.— A reed-like grass, 4 to 8 ft. high, with a rhizome creep- 
ing horizontally for 30 ft. or more, leaves spinescent or pungent, 
remarkably social. Very plentiful in rather damp sandy places by the 
banks of the river Cavado and Cotumbella ; June 1859. No. 2287. 
Mossamepes.—Plentiful and forming dense reed-beds, in half dried- 
up thickets near the banks of the river Bero; by no means a friend 
to travellers. Sparsely flowering ; July 1859. No. 2286. Plentiful on 
the banks of the river Maiombo, between Pedra do Rei and Pedra de 
Sal; Oct. 1859. No. 2285. 
Tripe 1x. CHLORIDEZ. 
46. MICROCHLOA R. Br.; Benth. & Hook. f. Gen. Pl. iii. p. 1163. 
1. M. setacea R. Br. Prodr. p. 208 (1810); Steud. Syn. PL 
Gram. p. 202 (1854) ; Durand & Schinz, Consp. FI. Afr. v. p. 856. 
M. abyssinica Hochst. ex A. Rich, Fl. Abyss. ii. p. 404 (2851) ; 
Steud., Ze. 
Puneo ANnDoNGO.— Widely and densely cespitose, with erect culms 
and very simple subfalcate spikes. On the spongy slopes of the more 
lofty rocks near Pungo Andongo; in fl. Nov. 1856. No. 2742. 
Gravelly places in the presidium; Jan. 1857. No. 2706. Rocky 
places in the presidium; Feb. 1857. Nos. 2799, 2799b. Flowering 
somewhat rarely, in rock-fissures at Pedras Negras; April 1857. 
No. 2810. Czspitose, with culms and leaves coriaceous rigidulous 
suberect, spikes falcate greenish. On the banks of the great cataract 
of Condo but not plentiful ; March 1857. No. 2807. 
Huititsa.—In the damp pastures of Empalanca; April 1860. 
No. 2659. 
Var. gracilis Rendle var. nov. 
A slender elongated variety 13 to 2 ft. high, with narrow 
weakly setaceous plicate or subflattened leaves 2 to 3} in. long, 
and gracefully curving spikes 6 to 8 in. long and scarcely exceed- 
ing } line in width. 
Punco Anponco.—A very slender and elegant grass, 2 ft. high, 
somewhat cespitose, a striking ornament of the somewhat damp 
aaa near Mutdlo at Pedras de Guinga; March 1857. 
0. ; 
2. M. ensifolia Rendle sp. nov. 
Perennial, densely cespitose, the culms slender, ascending or 
erect, densely covered at the base with a growth of short, ascend- 
ing, distichous, ensiform, blunt, stiffish, somewhat fleshy leaves 
with a strong prominent white scabridulous midrib and margins 
when young; cauline internodes 3, very slender, ultimately half 
as long again, or twice as long as the closely applied glabrous 
sheaths; nodes glabrous; ligule a very short membranous 
fimbriated ridge; blades generally very short; spike dense, 
secund, arcuate, spikelets 1} line long, lanceolate, acute, closely 
resembling those of M. setacea ; barren glumes glabrous, 1-nerved, 
gl. I. elliptic-oblong, subacute, gl. II. oblong narrowing above to 
the shortly apiculate apex, green with hyaline white margins ; 
